child human 12 female 9 male 8 Article 7 adolescent 6 controlled study 6 adult 5 major clinical study 4 school child 4 Child 3 Humans 3 clinical article 3 correlational study 3 human experiment 3 tactile stimulation 3 adolescence 2 adolescents 2 article 2 autism 2 behavior 2 brain derived neurotrophic factor 2 brain development 2 caregiver 2 catechol methyltransferase 2 child behavior 2 child development 2 child parent relation 2 childhood 2 children 2